Stone, A. H., & Siegel, B. M. (1967). Take a balloon. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Stone, A. Harris, agus Bertram M. Siegel. Take a Balloon. Englewood Cliffs, N.J: Prentice-Hall, 1967.
Lua MLA (9ú heag.)Stone, A. Harris, agus Bertram M. Siegel. Take a Balloon. Prentice-Hall, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.